Trying to get a bermuda lawn started on about 60,000 sf of black clay north of Dallas, Tx. We're planning to sod around the flatwork, and come out about 10-15' from all of that & the foundation. An Okla. sod company's providing TifWay 419 or Yukon/U3 (our choice) for $75/600 sf landed. To save, we thought of having the balance hydromulched, but have also heard of a new process called Terramulching (with compost). Any thoughts?